diff options
Diffstat (limited to 'arch/mips/loongson/common/early_printk.c')
| -rw-r--r-- | arch/mips/loongson/common/early_printk.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/arch/mips/loongson/common/early_printk.c b/arch/mips/loongson/common/early_printk.c index bc73edc0cfd8..a71736f00443 100644 --- a/arch/mips/loongson/common/early_printk.c +++ b/arch/mips/loongson/common/early_printk.c @@ -1,8 +1,8 @@ /* early printk support * * Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca> - * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology - * Author: Wu Zhangjin, wuzj@lemote.com + * Copyright (c) 2009 Lemote Inc. + * Author: Wu Zhangjin, wuzhangjin@gmail.com * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -12,26 +12,29 @@ #include <linux/serial_reg.h> #include <loongson.h> -#include <machine.h> #define PORT(base, offset) (u8 *)(base + offset) -static inline unsigned int serial_in(phys_addr_t base, int offset) +static inline unsigned int serial_in(unsigned char *base, int offset) { return readb(PORT(base, offset)); } -static inline void serial_out(phys_addr_t base, int offset, int value) +static inline void serial_out(unsigned char *base, int offset, int value) { writeb(value, PORT(base, offset)); } void prom_putchar(char c) { - phys_addr_t uart_base = - (phys_addr_t) ioremap_nocache(LOONGSON_UART_BASE, 8); + int timeout; + unsigned char *uart_base; - while ((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0) + uart_base = (unsigned char *)_loongson_uart_base; + timeout = 1024; + + while (((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0) && + (timeout-- > 0)) ; serial_out(uart_base, UART_TX, c); |